On Thu, Oct 22, 2009 at 09:44:38PM +1100, Karl Auer wrote: > On Thu, 2009-10-22 at 10:30 +0000, bmann...@vacation.karoshi.com wrote: > > > The RA contains a preference level... maybe that doesn't cut it if > > > multiple routers are sending the same preference level, but presumably > > > that would not happen in a well-tended network. > > > > I point you to a fairly common Internet architecture artifact, > > the exchange point... dozens of routers sharing a common > > media for peering exchange. > > And how do they discriminate now, with IPv4? > > Regards, K. >
IPv4 has no concept of RA/ND. to make this construct work at all in IPv6, all participants have to turn -off- RA/ND to prevent one or more routers trying to impose their views of addressing on their neighbours. --bill